Web Technologies, Multimedia & IoT - Complete Guide

Last Updated: August 19, 2026 | Marks Weightage: ~10 Marks | BPSC CS Teacher

Master Web Technologies, Multimedia, and IoT with this comprehensive guide for the BPSC Computer Science Teacher exam.

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1. Web Concepts

WWW: World Wide Web (System of interlinked web pages)
URL: Uniform Resource Locator (Web address)
Website: Collection of web pages
Webpage: Single document on the web
Static Webpage: Content doesn't change
Dynamic Webpage: Content changes based on user interaction
Web Hosting: Storing website files on a server

2. Web Browsers

🌐 Popular Browsers

Google Chrome
Mozilla Firefox
Microsoft Edge
Safari
Opera

🔧 Browser Features

Plug-ins: Extensions for additional functionality
Cookies: Small files stored on user device
Settings: Privacy, security, appearance

3. HTML (HyperText Markup Language)

HTML is the standard markup language for creating web pages.

📝 Basic Structure

<!DOCTYPE html>
<html>
<head>
    <title>My Page</title>
</head>
<body>
    <h1>Hello World!</h1>
    <p>This is a paragraph.</p>
</body>
</html>

📌 Common Tags: h1-h6, p, div, span, img, a, ul, ol, table, form, input

4. XML (eXtensible Markup Language)

XML is used to store and transport data. It is both human-readable and machine-readable.

📝 XML Example

<student>
    <name>John</name>
    <age>20</age>
    <course>Computer Science</course>
</student>

Key Difference: HTML is for display; XML is for data transport.

5. JavaScript Basics

JavaScript adds interactivity to web pages. It is client-side scripting.

📝 JavaScript Example

<script>
function greet() {
    alert("Hello, " + document.getElementById("name").value);
}
</script>

Variables: var, let, const
Data Types: Number, String, Boolean, Object
Functions: function name() { }
Events: onclick, onchange, onload

6. Web Publishing

Content Management Systems (CMS): WordPress, Joomla, Drupal
FTP (File Transfer Protocol): Uploading files to server
Domain Name: Website address (e.g., example.com)
Web Hosting: Shared, VPS, Dedicated, Cloud

7. Multimedia

🎨 Graphics

Raster (JPG, PNG, GIF)
Vector (SVG, EPS)
Formats: JPEG, PNG, GIF, SVG

🎵 Audio & Video

Audio: MP3, WAV, AAC
Video: MP4, AVI, MOV, MKV
VoIP: Voice over IP (Skype, Zoom)
Video Conferencing: Google Meet, Teams

8. E-Commerce

E-Commerce: Buying and selling goods/services online.

B2B: Business to Business
B2C: Business to Consumer
C2C: Consumer to Consumer
C2B: Consumer to Business

📌 Examples: Amazon, Flipkart, eBay, Shopify

9. Internet of Things (IoT)

🌐 What is IoT?

IoT connects physical devices to the internet, enabling them to communicate and interact.

Sensors: Temperature, motion, pressure
Actuators: Motors, lights, switches
Connectivity: Wi-Fi, Bluetooth, 5G

📱 Applications

Smart Cities: Traffic management, smart lighting
Smart Homes: Smart locks, thermostats, lights
Healthcare: Wearable health monitors
Agriculture: Smart irrigation, crop monitoring

10. Frequently Asked Questions

❓ What is the difference between HTML and XML?

HTML is for displaying data; XML is for transporting and storing data.

❓ What is JavaScript used for?

JavaScript is used for adding interactivity and dynamic behavior to web pages.

❓ What is IoT?

Internet of Things - connecting physical devices to the internet.

❓ What is the difference between Static and Dynamic websites?

Static websites have fixed content; Dynamic websites change content based on user interaction.

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